On Sep 21, 2009, at 4:39 PM, Hippo Man wrote:

Is there a way in Cocoa to programmatically query which Space the user
is currently looking at? In other words, if I have six Spaces defined
and Space 3 happens to be the one which is currently visible on my
screen, how can I make some sort of Cocoa-based query to find out that
Space 3 is the one that's currently visible?

You could use the (CoreGraphics, not Cocoa) API CGWindowListCreateDescriptionFromArray to get a window description dictionary for a window, and then look at the WorkspaceID data in that dictionary. There is no defined mapping from WorkspaceID to a particular space, however.

Secondly, is there any way in any of those environments to
programmatically switch Spaces? For example, if Space 3 happens to be
visible, is there any Cocoa code I can run which will switch the
visibility to, say, Space 2?

No, there is no API (in Cocoa or otherwise) to control the active space.

-eric

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